/*
 * Copyright (c) 2010, University of Innsbruck, Austria.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 * details.
 * You should have received a copy of the GNU Lesser General Public License along
 * with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */

package at.sti2.sepn.agent.component;

import at.sti2.sepn.core.Event;
import at.sti2.sepn.core.buffer.EventBuffer;

/**
 * 
 * Filter components implementation
 * 	1. takes one by one elements from the inputs
 *  2. applies the filter 
 *  3. classifies events into the appropriate output
 * 
 * @author skomazec
 *
 */
public abstract class AbstractFilter extends AbstractAgentComponent implements Runnable{
	
	public AbstractFilter(){
		super();
	}
	
	public abstract void filterEvent(Event event);
	
	public void run(){
		
		EventBuffer inputBuffer = null;
		Event inputEvent = null;
		
		while(true)
			for (String inputId:getInputIds()){
				inputBuffer = getInputById(inputId);
				inputEvent = inputBuffer.takeEvent();
				if (inputEvent != null)
					filterEvent(inputEvent);
			}
	}
}
